Parameters: label - the label component, may be used to provide contextual information. Default implementation ignores it. Parameters: value - the value to edit (initial value). Parameters: labelElem - the label element to render the value into. Is a hint, if provided should be obtained by calling ItsNatLabel.getElement. the component used to edit in place the label value. Current implementation of labels does nothing with this component and may be null (is not mandatory to use a single component as an editor). See Also:ItsNatLabel.setItsNatLabelEditor(ItsNatLabelEditor)